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Background The dynamic relationship between pulse waveform of intracranial pressure (ICP) and transcranial Doppler (TCD) cerebral blood flow velocity (CBFV) may contain information about cerebrospinal compliance. This study investigated the possibility by focusing on the phase shift between fundamental harmonics of CBFV and ICP. Methods Thirty-seven normal pressure hydrocephalus patients...
ABSTRACT
BACKGROUNDChanges in partial pressure of carbon dioxide (PaCO2) are associated with a decrease in cerebral blood flow (CBF) during hypocapnia and an increase in CBF during hypercapnia. However, the effects of changes in PaCO2 on cerebral arterial compliance (Ca) are unknown.
METHODSWe assessed the changes in Ca in 20 normal subjects using monitoring of arterial blood pressure (ABP) and...
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